lustre/include/obd_class.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #ifndef __CLASS_OBD_H
  37 #define __CLASS_OBD_H
  38
  39 #ifndef __KERNEL__
  40 # include <liblustre.h>
  41 #endif
  42
  43 #include <obd_support.h>
  44 #include <lustre_import.h>
  45 #include <lustre_net.h>
  46 #include <obd.h>
  47 #include <lustre_lib.h>
  48 #include <lustre/lustre_idl.h>
  49 #include <lprocfs_status.h>
  50
  51 #if defined(__linux__)
  52 #include <linux/obd_class.h>
  53 #elif defined(__APPLE__)
  54 #include <darwin/obd_class.h>
  55 #elif defined(__WINNT__)
  56 #include <winnt/obd_class.h>
  57 #else
  58 #error Unsupported operating system.
  59 #endif
  60
  61 /* OBD Device Declarations */
  62 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  63 extern spinlock_t obd_dev_lock;
  64
  65 /* OBD Operations Declarations */
  66 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  67 extern struct obd_device *class_exp2obd(struct obd_export *);
  68
  69 struct lu_device_type;
  70
  71 /* genops.c */
  72 struct obd_export *class_conn2export(struct lustre_handle *);
  73 int class_register_type(struct obd_ops *, struct md_ops *,
  74                         struct lprocfs_vars *, const char *nm,
  75                         struct lu_device_type *ldt);
  76 int class_unregister_type(const char *nm);
  77
  78 struct obd_device *class_newdev(const char *type_name, const char *name);
  79 void class_release_dev(struct obd_device *obd);
  80
  81 int class_name2dev(const char *name);
  82 struct obd_device *class_name2obd(const char *name);
  83 int class_uuid2dev(struct obd_uuid *uuid);
  84 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  85 void class_obd_list(void);
  86 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  87                                           const char * typ_name,
  88                                           struct obd_uuid *grp_uuid);
  89 struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
  90                                              struct obd_uuid *grp_uuid);
  91 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  92                                            int *next);
  93 struct obd_device * class_num2obd(int num);
  94
  95 int oig_init(struct obd_io_group **oig);
  96 int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
  97 void oig_complete_one(struct obd_io_group *oig,
  98                       struct oig_callback_context *occ, int rc);
  99 void oig_release(struct obd_io_group *oig);
 100 int oig_wait(struct obd_io_group *oig);
 101
 102 char *obd_export_nid2str(struct obd_export *exp);
 103
 104 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 105 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 106
 107 int obd_zombie_impexp_init(void);
 108 void obd_zombie_impexp_stop(void);
 109 void obd_zombie_impexp_cull(void);
 110
 111 /* obd_config.c */
 112 int class_process_config(struct lustre_cfg *lcfg);
 113 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 114                              struct lustre_cfg *lcfg, void *data);
 115 int class_attach(struct lustre_cfg *lcfg);
 116 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 117 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 118 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 119 struct obd_device *class_incref(struct obd_device *obd);
 120 void class_decref(struct obd_device *obd);
 121
 122 /*obdecho*/
 123 #ifdef LPROCFS
 124 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 125 #else
 126 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 127 {
 128         memset(lvars, 0, sizeof(*lvars));
 129 }
 130 #endif
 131
 132 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 133 #define CFG_F_MARKER    0x02   /* We are within a maker */
 134 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 135 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 136 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 137
 138 /* Passed as data param to class_config_parse_llog */
 139 struct config_llog_instance {
 140         char *              cfg_instance;
 141         struct super_block *cfg_sb;
 142         struct obd_uuid     cfg_uuid;
 143         int                 cfg_last_idx; /* for partial llog processing */
 144         int                 cfg_flags;
 145 };
 146 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 147                             struct config_llog_instance *cfg);
 148 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 149                            struct config_llog_instance *cfg);
 150
 151 /* list of active configuration logs  */
 152 struct config_llog_data {
 153         char               *cld_logname;
 154         struct ldlm_res_id  cld_resid;
 155         struct config_llog_instance cld_cfg;
 156         struct list_head    cld_list_chain;
 157         atomic_t            cld_refcount;
 158         struct obd_export  *cld_mgcexp;
 159         unsigned int        cld_stopping:1, /* we were told to stop watching */
 160                             cld_lostlock:1; /* lock not requeued */
 161 };
 162
 163 struct lustre_profile {
 164         struct list_head lp_list;
 165         char            *lp_profile;
 166         char            *lp_dt;
 167         char            *lp_md;
 168 };
 169
 170 struct lustre_profile *class_get_profile(const char * prof);
 171 void class_del_profile(const char *prof);
 172 void class_del_profiles(void);
 173
 174 #define class_export_rpc_get(exp)                                       \
 175 ({                                                                      \
 176         atomic_inc(&(exp)->exp_rpc_count);                              \
 177         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 178                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 179         class_export_get(exp);                                          \
 180 })
 181
 182 #define class_export_rpc_put(exp)                                       \
 183 ({                                                                      \
 184         atomic_dec(&(exp)->exp_rpc_count);                              \
 185         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 186                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 187         class_export_put(exp);                                          \
 188 })
 189
 190 /* genops.c */
 191 #define class_export_get(exp)                                                  \
 192 ({                                                                             \
 193         struct obd_export *exp_ = exp;                                         \
 194         atomic_inc(&exp_->exp_refcount);                                       \
 195         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 196                atomic_read(&exp_->exp_refcount));                              \
 197         exp_;                                                                  \
 198 })
 199
 200 #define class_export_put(exp)                                                  \
 201 do {                                                                           \
 202         LASSERT((exp) != NULL);                                                \
 203         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 204                atomic_read(&(exp)->exp_refcount) - 1);                         \
 205         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 206         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 207         __class_export_put(exp);                                               \
 208 } while (0)
 209
 210 void __class_export_put(struct obd_export *);
 211 struct obd_export *class_new_export(struct obd_device *obddev,
 212                                     struct obd_uuid *cluuid);
 213 void class_unlink_export(struct obd_export *exp);
 214
 215 struct obd_import *class_import_get(struct obd_import *);
 216 void class_import_put(struct obd_import *);
 217 struct obd_import *class_new_import(struct obd_device *obd);
 218 void class_destroy_import(struct obd_import *exp);
 219
 220 struct obd_type *class_search_type(const char *name);
 221 struct obd_type *class_get_type(const char *name);
 222 void class_put_type(struct obd_type *type);
 223 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 224                   struct obd_uuid *cluuid);
 225 int class_disconnect(struct obd_export *exp);
 226 void class_fail_export(struct obd_export *exp);
 227 void class_disconnect_exports(struct obd_device *obddev);
 228 int class_disconnect_stale_exports(struct obd_device *,
 229                                     int (*test_export)(struct obd_export *));
 230 int class_manual_cleanup(struct obd_device *obd);
 231
 232 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 233 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 234 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 235                      unsigned int ia_valid);
 236 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 237 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 238 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 239                   unsigned int valid);
 240
 241 #define OBT(dev)        (dev)->obd_type
 242 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 243 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 244 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 245
 246 /* Ensure obd_setup: used for cleanup which must be called
 247    while obd is stopping */
 248 #define OBD_CHECK_DEV(obd)                                      \
 249 do {                                                            \
 250         if (!(obd)) {                                           \
 251                 CERROR("NULL device\n");                        \
 252                 RETURN(-ENODEV);                                \
 253         }                                                       \
 254 } while (0)
 255
 256 /* ensure obd_setup and !obd_stopping */
 257 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 258 do {                                                            \
 259         OBD_CHECK_DEV(obd);                                     \
 260         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 261                 CERROR("Device %d not setup\n",                 \
 262                        (obd)->obd_minor);                       \
 263                 RETURN(-ENODEV);                                \
 264         }                                                       \
 265 } while (0)
 266
 267
 268 #ifdef LPROCFS
 269 #define OBD_COUNTER_OFFSET(op)                                  \
 270         ((offsetof(struct obd_ops, o_ ## op) -                  \
 271           offsetof(struct obd_ops, o_iocontrol))                \
 272          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 273
 274 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 275         if ((obdx)->obd_stats != NULL) {                          \
 276                 unsigned int coffset;                             \
 277                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 278                         OBD_COUNTER_OFFSET(op);                   \
 279                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 280                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 281         }
 282
 283 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 284         if ((export)->exp_obd->obd_stats != NULL) {                          \
 285                 unsigned int coffset;                                        \
 286                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 287                         OBD_COUNTER_OFFSET(op);                              \
 288                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 289                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 290                 if ((export)->exp_nid_stats != NULL &&                       \
 291                     (export)->exp_nid_stats->nid_stats != NULL)              \
 292                         lprocfs_counter_incr(                                \
 293                                 (export)->exp_nid_stats->nid_stats, coffset);\
 294         }
 295
 296 #define MD_COUNTER_OFFSET(op)                                   \
 297         ((offsetof(struct md_ops, m_ ## op) -                   \
 298           offsetof(struct md_ops, m_getstatus))                 \
 299          / sizeof(((struct md_ops *)(0))->m_getstatus))
 300
 301 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 302         if ((obd)->md_stats != NULL) {                           \
 303                 unsigned int coffset;                            \
 304                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 305                         MD_COUNTER_OFFSET(op);                   \
 306                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 307                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 308         }
 309
 310 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 311         if ((export)->exp_obd->obd_stats != NULL) {                          \
 312                 unsigned int coffset;                                        \
 313                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 314                         MD_COUNTER_OFFSET(op);                               \
 315                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 316                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 317                 if ((export)->exp_md_stats != NULL)                          \
 318                         lprocfs_counter_incr(                                \
 319                                 (export)->exp_md_stats, coffset);            \
 320         }
 321
 322 #else
 323 #define OBD_COUNTER_OFFSET(op)
 324 #define OBD_COUNTER_INCREMENT(obd, op)
 325 #define EXP_COUNTER_INCREMENT(exp, op)
 326 #define MD_COUNTER_INCREMENT(obd, op)
 327 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 328 #endif
 329
 330 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 331 do {                                                            \
 332         if (!OBT(obd) || !MDP((obd), op)) {                     \
 333                 if (err)                                        \
 334                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 335                                obd->obd_name, obd->obd_minor);  \
 336                 RETURN(err);                                    \
 337         }                                                       \
 338 } while (0)
 339
 340 #define EXP_CHECK_MD_OP(exp, op)                                \
 341 do {                                                            \
 342         if ((exp) == NULL) {                                    \
 343                 CERROR("obd_" #op ": NULL export\n");           \
 344                 RETURN(-ENODEV);                                \
 345         }                                                       \
 346         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 347                 CERROR("obd_" #op ": cleaned up obd\n");        \
 348                 RETURN(-EOPNOTSUPP);                            \
 349         }                                                       \
 350         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 351                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 352                        (exp)->exp_obd->obd_name,                \
 353                        (exp)->exp_obd->obd_minor);              \
 354                 RETURN(-EOPNOTSUPP);                            \
 355         }                                                       \
 356 } while (0)
 357
 358
 359 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 360 do {                                                            \
 361         if (!OBT(obd) || !OBP((obd), op)) {                     \
 362                 if (err)                                        \
 363                         CERROR("obd_" #op ": dev %d no operation\n",    \
 364                                obd->obd_minor);                 \
 365                 RETURN(err);                                    \
 366         }                                                       \
 367 } while (0)
 368
 369 #define EXP_CHECK_DT_OP(exp, op)                                \
 370 do {                                                            \
 371         if ((exp) == NULL) {                                    \
 372                 CERROR("obd_" #op ": NULL export\n");           \
 373                 RETURN(-ENODEV);                                \
 374         }                                                       \
 375         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 376                 CERROR("obd_" #op ": cleaned up obd\n");        \
 377                 RETURN(-EOPNOTSUPP);                            \
 378         }                                                       \
 379         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 380                 CERROR("obd_" #op ": dev %d no operation\n",    \
 381                        (exp)->exp_obd->obd_minor);              \
 382                 RETURN(-EOPNOTSUPP);                            \
 383         }                                                       \
 384 } while (0)
 385
 386 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 387 do {                                                                 \
 388         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 389                 if (err)                                             \
 390                         CERROR("lop_" #op ": dev %d no operation\n", \
 391                                ctxt->loc_obd->obd_minor);            \
 392                 RETURN(err);                                         \
 393         }                                                            \
 394 } while (0)
 395
 396 static inline int class_devno_max(void)
 397 {
 398         return MAX_OBD_DEVICES;
 399 }
 400
 401 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 402                                void *key, __u32 *vallen, void *val,
 403                                struct lov_stripe_md *lsm)
 404 {
 405         int rc;
 406         ENTRY;
 407
 408         EXP_CHECK_DT_OP(exp, get_info);
 409         EXP_COUNTER_INCREMENT(exp, get_info);
 410
 411         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
 412         RETURN(rc);
 413 }
 414
 415 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 416                                      void *key, obd_count vallen, void *val,
 417                                      struct ptlrpc_request_set *set)
 418 {
 419         int rc;
 420         ENTRY;
 421
 422         EXP_CHECK_DT_OP(exp, set_info_async);
 423         EXP_COUNTER_INCREMENT(exp, set_info_async);
 424
 425         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 426                                                set);
 427         RETURN(rc);
 428 }
 429
 430 #ifdef __KERNEL__
 431 #define DECLARE_LU_VARS(ldt, d)                 \
 432         struct lu_device_type *ldt;             \
 433         struct lu_device *d
 434 #else
 435 #define DECLARE_LU_VARS(ldt, d)                                 \
 436         extern void __placeholder_to_put_a_semicolon(void)
 437 #endif
 438 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 439 {
 440         int rc;
 441         DECLARE_LU_VARS(ldt, d);
 442         ENTRY;
 443
 444 #ifdef __KERNEL__
 445         ldt = obd->obd_type->typ_lu;
 446         if (ldt != NULL) {
 447                 struct lu_env env;
 448
 449                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 450                 if (rc == 0) {
 451                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 452                         lu_env_fini(&env);
 453                         if (!IS_ERR(d)) {
 454                                 obd->obd_lu_dev = d;
 455                                 d->ld_obd = obd;
 456                                 rc = 0;
 457                         } else
 458                                 rc = PTR_ERR(d);
 459                 }
 460         } else
 461 #endif
 462         {
 463                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 464                 OBD_COUNTER_INCREMENT(obd, setup);
 465                 rc = OBP(obd, setup)(obd, cfg);
 466         }
 467         RETURN(rc);
 468 }
 469
 470 static inline int obd_precleanup(struct obd_device *obd,
 471                                  enum obd_cleanup_stage cleanup_stage)
 472 {
 473         int rc;
 474         DECLARE_LU_VARS(ldt, d);
 475         ENTRY;
 476
 477         OBD_CHECK_DEV(obd);
 478 #ifdef __KERNEL__
 479         ldt = obd->obd_type->typ_lu;
 480         d = obd->obd_lu_dev;
 481         if (ldt != NULL) {
 482                 LASSERT(d != NULL);
 483                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 484                         struct lu_env env;
 485
 486                         rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 487                         if (rc == 0) {
 488                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 489                                 lu_env_fini(&env);
 490                         }
 491                 } else {
 492                         rc = 0;
 493                 }
 494         } else
 495 #endif
 496         {
 497                 OBD_CHECK_DT_OP(obd, precleanup, 0);
 498                 rc = OBP(obd, precleanup)(obd, cleanup_stage);
 499         }
 500
 501         OBD_COUNTER_INCREMENT(obd, precleanup);
 502         RETURN(rc);
 503 }
 504
 505 static inline int obd_cleanup(struct obd_device *obd)
 506 {
 507         int rc;
 508         DECLARE_LU_VARS(ldt, d);
 509         ENTRY;
 510
 511         OBD_CHECK_DEV(obd);
 512
 513 #ifdef __KERNEL__
 514         ldt = obd->obd_type->typ_lu;
 515         d = obd->obd_lu_dev;
 516         if (ldt != NULL) {
 517                 struct lu_env env;
 518                 LASSERT(d != NULL);
 519
 520                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 521                 if (rc == 0) {
 522                         ldt->ldt_ops->ldto_device_free(&env, d);
 523                         lu_env_fini(&env);
 524                         obd->obd_lu_dev = NULL;
 525                 }
 526         } else
 527 #endif
 528         {
 529                 OBD_CHECK_DT_OP(obd, cleanup, 0);
 530                 rc = OBP(obd, cleanup)(obd);
 531         }
 532         OBD_COUNTER_INCREMENT(obd, cleanup);
 533         RETURN(rc);
 534 }
 535
 536 static inline int
 537 obd_process_config(struct obd_device *obd, int datalen, void *data)
 538 {
 539         int rc;
 540         DECLARE_LU_VARS(ldt, d);
 541         ENTRY;
 542
 543         OBD_CHECK_DEV(obd);
 544
 545 #ifdef __KERNEL__
 546         ldt = obd->obd_type->typ_lu;
 547         d = obd->obd_lu_dev;
 548         if (ldt != NULL && d != NULL) {
 549                 struct lu_env env;
 550
 551                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 552                 if (rc == 0) {
 553                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 554                         lu_env_fini(&env);
 555                 }
 556         } else
 557 #endif
 558         {
 559                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 560                 rc = OBP(obd, process_config)(obd, datalen, data);
 561         }
 562         OBD_COUNTER_INCREMENT(obd, process_config);
 563
 564         RETURN(rc);
 565 }
 566
 567 /* Pack an in-memory MD struct for storage on disk.
 568  * Returns +ve size of packed MD (0 for free), or -ve error.
 569  *
 570  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 571  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 572  * If @*disk_tgt == NULL, it will be allocated
 573  */
 574 static inline int obd_packmd(struct obd_export *exp,
 575                              struct lov_mds_md **disk_tgt,
 576                              struct lov_stripe_md *mem_src)
 577 {
 578         int rc;
 579         ENTRY;
 580
 581         EXP_CHECK_DT_OP(exp, packmd);
 582         EXP_COUNTER_INCREMENT(exp, packmd);
 583
 584         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 585         RETURN(rc);
 586 }
 587
 588 static inline int obd_size_diskmd(struct obd_export *exp,
 589                                   struct lov_stripe_md *mem_src)
 590 {
 591         return obd_packmd(exp, NULL, mem_src);
 592 }
 593
 594 /* helper functions */
 595 static inline int obd_alloc_diskmd(struct obd_export *exp,
 596                                    struct lov_mds_md **disk_tgt)
 597 {
 598         LASSERT(disk_tgt);
 599         LASSERT(*disk_tgt == NULL);
 600         return obd_packmd(exp, disk_tgt, NULL);
 601 }
 602
 603 static inline int obd_free_diskmd(struct obd_export *exp,
 604                                   struct lov_mds_md **disk_tgt)
 605 {
 606         LASSERT(disk_tgt);
 607         LASSERT(*disk_tgt);
 608         return obd_packmd(exp, disk_tgt, NULL);
 609 }
 610
 611 /* Unpack an MD struct from disk to in-memory format.
 612  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 613  *
 614  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 615  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 616  * If @*mem_tgt == NULL, it will be allocated
 617  */
 618 static inline int obd_unpackmd(struct obd_export *exp,
 619                                struct lov_stripe_md **mem_tgt,
 620                                struct lov_mds_md *disk_src,
 621                                int disk_len)
 622 {
 623         int rc;
 624         ENTRY;
 625
 626         EXP_CHECK_DT_OP(exp, unpackmd);
 627         EXP_COUNTER_INCREMENT(exp, unpackmd);
 628
 629         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 630         RETURN(rc);
 631 }
 632
 633 /* helper functions */
 634 static inline int obd_alloc_memmd(struct obd_export *exp,
 635                                   struct lov_stripe_md **mem_tgt)
 636 {
 637         LASSERT(mem_tgt);
 638         LASSERT(*mem_tgt == NULL);
 639         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 640 }
 641
 642 static inline int obd_free_memmd(struct obd_export *exp,
 643                                  struct lov_stripe_md **mem_tgt)
 644 {
 645         LASSERT(mem_tgt);
 646         LASSERT(*mem_tgt);
 647         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 648 }
 649
 650 static inline int obd_checkmd(struct obd_export *exp,
 651                               struct obd_export *md_exp,
 652                               struct lov_stripe_md *mem_tgt)
 653 {
 654         int rc;
 655         ENTRY;
 656
 657         EXP_CHECK_DT_OP(exp, checkmd);
 658         EXP_COUNTER_INCREMENT(exp, checkmd);
 659
 660         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 661         RETURN(rc);
 662 }
 663
 664 static inline int obd_precreate(struct obd_export *exp)
 665 {
 666         int rc;
 667         ENTRY;
 668
 669         EXP_CHECK_DT_OP(exp, precreate);
 670         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 671
 672         rc = OBP(exp->exp_obd, precreate)(exp);
 673         RETURN(rc);
 674 }
 675
 676 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 677                              struct lov_stripe_md **ea,
 678                              struct obd_trans_info *oti)
 679 {
 680         int rc;
 681         ENTRY;
 682
 683         EXP_CHECK_DT_OP(exp, create);
 684         EXP_COUNTER_INCREMENT(exp, create);
 685
 686         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 687         RETURN(rc);
 688 }
 689
 690 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 691                               struct lov_stripe_md *ea,
 692                               struct obd_trans_info *oti,
 693                               struct obd_export *md_exp)
 694 {
 695         int rc;
 696         ENTRY;
 697
 698         EXP_CHECK_DT_OP(exp, destroy);
 699         EXP_COUNTER_INCREMENT(exp, destroy);
 700
 701         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 702         RETURN(rc);
 703 }
 704
 705 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 706 {
 707         int rc;
 708         ENTRY;
 709
 710         EXP_CHECK_DT_OP(exp, getattr);
 711         EXP_COUNTER_INCREMENT(exp, getattr);
 712
 713         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 714         RETURN(rc);
 715 }
 716
 717 static inline int obd_getattr_async(struct obd_export *exp,
 718                                     struct obd_info *oinfo,
 719                                     struct ptlrpc_request_set *set)
 720 {
 721         int rc;
 722         ENTRY;
 723
 724         EXP_CHECK_DT_OP(exp, getattr_async);
 725         EXP_COUNTER_INCREMENT(exp, getattr_async);
 726
 727         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 728         RETURN(rc);
 729 }
 730
 731 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 732                               struct obd_trans_info *oti)
 733 {
 734         int rc;
 735         ENTRY;
 736
 737         EXP_CHECK_DT_OP(exp, setattr);
 738         EXP_COUNTER_INCREMENT(exp, setattr);
 739
 740         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 741         RETURN(rc);
 742 }
 743
 744 /* This performs all the requests set init/wait/destroy actions. */
 745 static inline int obd_setattr_rqset(struct obd_export *exp,
 746                                     struct obd_info *oinfo,
 747                                     struct obd_trans_info *oti)
 748 {
 749         struct ptlrpc_request_set *set = NULL;
 750         int rc;
 751         ENTRY;
 752
 753         EXP_CHECK_DT_OP(exp, setattr_async);
 754         EXP_COUNTER_INCREMENT(exp, setattr_async);
 755
 756         set =  ptlrpc_prep_set();
 757         if (set == NULL)
 758                 RETURN(-ENOMEM);
 759
 760         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 761         if (rc == 0)
 762                 rc = ptlrpc_set_wait(set);
 763         ptlrpc_set_destroy(set);
 764         RETURN(rc);
 765 }
 766
 767 /* This adds all the requests into @set if @set != NULL, otherwise
 768    all requests are sent asynchronously without waiting for response. */
 769 static inline int obd_setattr_async(struct obd_export *exp,
 770                                     struct obd_info *oinfo,
 771                                     struct obd_trans_info *oti,
 772                                     struct ptlrpc_request_set *set)
 773 {
 774         int rc;
 775         ENTRY;
 776
 777         EXP_CHECK_DT_OP(exp, setattr_async);
 778         EXP_COUNTER_INCREMENT(exp, setattr_async);
 779
 780         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 781         RETURN(rc);
 782 }
 783
 784 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 785                                int priority)
 786 {
 787         struct obd_device *obd = imp->imp_obd;
 788         int rc;
 789         ENTRY;
 790
 791         OBD_CHECK_DEV_ACTIVE(obd);
 792         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 793         OBD_COUNTER_INCREMENT(obd, add_conn);
 794
 795         rc = OBP(obd, add_conn)(imp, uuid, priority);
 796         RETURN(rc);
 797 }
 798
 799 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 800 {
 801         struct obd_device *obd = imp->imp_obd;
 802         int rc;
 803         ENTRY;
 804
 805         OBD_CHECK_DEV_ACTIVE(obd);
 806         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 807         OBD_COUNTER_INCREMENT(obd, del_conn);
 808
 809         rc = OBP(obd, del_conn)(imp, uuid);
 810         RETURN(rc);
 811 }
 812
 813 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 814 {
 815         struct obd_uuid *uuid;
 816         ENTRY;
 817
 818         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 819         EXP_COUNTER_INCREMENT(exp, get_uuid);
 820
 821         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 822         RETURN(uuid);
 823 }
 824
 825 static inline int obd_connect(const struct lu_env *env,
 826                               struct lustre_handle *conn,struct obd_device *obd,
 827                               struct obd_uuid *cluuid,
 828                               struct obd_connect_data *d,
 829                               void *localdata)
 830 {
 831         int rc;
 832 #ifdef LIBCFS_DEBUG
 833         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 834                                                    * check */
 835 #endif
 836         ENTRY;
 837
 838         OBD_CHECK_DEV_ACTIVE(obd);
 839         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 840         OBD_COUNTER_INCREMENT(obd, connect);
 841
 842         rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
 843         /* check that only subset is granted */
 844         LASSERT(ergo(d != NULL,
 845                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 846         RETURN(rc);
 847 }
 848
 849 static inline int obd_reconnect(const struct lu_env *env,
 850                                 struct obd_export *exp,
 851                                 struct obd_device *obd,
 852                                 struct obd_uuid *cluuid,
 853                                 struct obd_connect_data *d)
 854 {
 855         int rc;
 856 #ifdef LIBCFS_DEBUG
 857         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 858                                                    * check */
 859 #endif
 860
 861         ENTRY;
 862
 863         OBD_CHECK_DEV_ACTIVE(obd);
 864         OBD_CHECK_DT_OP(obd, reconnect, 0);
 865         OBD_COUNTER_INCREMENT(obd, reconnect);
 866
 867         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d);
 868         /* check that only subset is granted */
 869         LASSERT(ergo(d != NULL,
 870                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 871         RETURN(rc);
 872 }
 873
 874 static inline int obd_disconnect(struct obd_export *exp)
 875 {
 876         int rc;
 877         ENTRY;
 878
 879         EXP_CHECK_DT_OP(exp, disconnect);
 880         EXP_COUNTER_INCREMENT(exp, disconnect);
 881
 882         rc = OBP(exp->exp_obd, disconnect)(exp);
 883         RETURN(rc);
 884 }
 885
 886 static inline int obd_fid_init(struct obd_export *exp)
 887 {
 888         int rc;
 889         ENTRY;
 890
 891         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 892         EXP_COUNTER_INCREMENT(exp, fid_init);
 893
 894         rc = OBP(exp->exp_obd, fid_init)(exp);
 895         RETURN(rc);
 896 }
 897
 898 static inline int obd_fid_fini(struct obd_export *exp)
 899 {
 900         int rc;
 901         ENTRY;
 902
 903         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 904         EXP_COUNTER_INCREMENT(exp, fid_fini);
 905
 906         rc = OBP(exp->exp_obd, fid_fini)(exp);
 907         RETURN(rc);
 908 }
 909
 910 static inline int obd_fid_alloc(struct obd_export *exp,
 911                                 struct lu_fid *fid,
 912                                 struct md_op_data *op_data)
 913 {
 914         int rc;
 915         ENTRY;
 916
 917         EXP_CHECK_DT_OP(exp, fid_alloc);
 918         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 919
 920         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 921         RETURN(rc);
 922 }
 923
 924 static inline int obd_fid_delete(struct obd_export *exp,
 925                                  const struct lu_fid *fid)
 926 {
 927         int rc;
 928         ENTRY;
 929
 930         EXP_CHECK_DT_OP(exp, fid_delete);
 931         EXP_COUNTER_INCREMENT(exp, fid_delete);
 932
 933         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 934         RETURN(rc);
 935 }
 936
 937 static inline int obd_ping(struct obd_export *exp)
 938 {
 939         int rc;
 940         ENTRY;
 941
 942         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 943         EXP_COUNTER_INCREMENT(exp, ping);
 944
 945         rc = OBP(exp->exp_obd, ping)(exp);
 946         RETURN(rc);
 947 }
 948
 949 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
 950 {
 951         int rc;
 952         ENTRY;
 953
 954         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
 955         OBD_COUNTER_INCREMENT(obd, pool_new);
 956
 957         rc = OBP(obd, pool_new)(obd, poolname);
 958         RETURN(rc);
 959 }
 960
 961 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
 962 {
 963         int rc;
 964         ENTRY;
 965
 966         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
 967         OBD_COUNTER_INCREMENT(obd, pool_del);
 968
 969         rc = OBP(obd, pool_del)(obd, poolname);
 970         RETURN(rc);
 971 }
 972
 973 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
 974 {
 975         int rc;
 976         ENTRY;
 977
 978         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
 979         OBD_COUNTER_INCREMENT(obd, pool_add);
 980
 981         rc = OBP(obd, pool_add)(obd, poolname, ostname);
 982         RETURN(rc);
 983 }
 984
 985 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
 986 {
 987         int rc;
 988         ENTRY;
 989
 990         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
 991         OBD_COUNTER_INCREMENT(obd, pool_rem);
 992
 993         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
 994         RETURN(rc);
 995 }
 996
 997 static inline int obd_init_export(struct obd_export *exp)
 998 {
 999         int rc = 0;
1000
1001         ENTRY;
1002         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1003             OBP((exp)->exp_obd, init_export))
1004                 rc = OBP(exp->exp_obd, init_export)(exp);
1005         RETURN(rc);
1006 }
1007
1008 static inline int obd_destroy_export(struct obd_export *exp)
1009 {
1010         ENTRY;
1011         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1012             OBP((exp)->exp_obd, destroy_export))
1013                 OBP(exp->exp_obd, destroy_export)(exp);
1014         RETURN(0);
1015 }
1016
1017 static inline int obd_extent_calc(struct obd_export *exp,
1018                                   struct lov_stripe_md *md,
1019                                   int cmd, obd_off *offset)
1020 {
1021         int rc;
1022         ENTRY;
1023         EXP_CHECK_DT_OP(exp, extent_calc);
1024         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1025         RETURN(rc);
1026 }
1027
1028 static inline struct dentry *
1029 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1030 {
1031         LASSERT(exp->exp_obd);
1032
1033         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1034                                exp->exp_obd);
1035 }
1036
1037 static inline int
1038 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1039 {
1040         LASSERT(exp->exp_obd);
1041         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
1042 #if 0
1043         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1044                               dentry, exp->exp_obd);
1045 #endif
1046         return 0;
1047 }
1048
1049 #ifndef time_before
1050 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
1051 #endif
1052
1053 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1054  * If the cache is older than @max_age we will get a new value from the
1055  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1056 static inline int obd_statfs_async(struct obd_device *obd,
1057                                    struct obd_info *oinfo,
1058                                    __u64 max_age,
1059                                    struct ptlrpc_request_set *rqset)
1060 {
1061         int rc = 0;
1062         ENTRY;
1063
1064         if (obd == NULL)
1065                 RETURN(-EINVAL);
1066
1067         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1068         OBD_COUNTER_INCREMENT(obd, statfs);
1069
1070         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1071                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1072         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1073                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1074         } else {
1075                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1076                        " objects "LPU64"/"LPU64"\n",
1077                        obd->obd_name, &obd->obd_osfs,
1078                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1079                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1080                 spin_lock(&obd->obd_osfs_lock);
1081                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1082                 spin_unlock(&obd->obd_osfs_lock);
1083                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1084                 if (oinfo->oi_cb_up)
1085                         oinfo->oi_cb_up(oinfo, 0);
1086         }
1087         RETURN(rc);
1088 }
1089
1090 static inline int obd_statfs_rqset(struct obd_device *obd,
1091                                    struct obd_statfs *osfs, __u64 max_age,
1092                                    __u32 flags)
1093 {
1094         struct ptlrpc_request_set *set = NULL;
1095         struct obd_info oinfo = { { { 0 } } };
1096         int rc = 0;
1097         ENTRY;
1098
1099         set =  ptlrpc_prep_set();
1100         if (set == NULL)
1101                 RETURN(-ENOMEM);
1102
1103         oinfo.oi_osfs = osfs;
1104         oinfo.oi_flags = flags;
1105         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1106         if (rc == 0)
1107                 rc = ptlrpc_set_wait(set);
1108         ptlrpc_set_destroy(set);
1109         RETURN(rc);
1110 }
1111
1112 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1113  * If the cache is older than @max_age we will get a new value from the
1114  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1115 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1116                              __u64 max_age, __u32 flags)
1117 {
1118         int rc = 0;
1119         ENTRY;
1120
1121         if (obd == NULL)
1122                 RETURN(-EINVAL);
1123
1124         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1125         OBD_COUNTER_INCREMENT(obd, statfs);
1126
1127         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1128                obd->obd_osfs_age, max_age);
1129         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1130                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1131                 if (rc == 0) {
1132                         spin_lock(&obd->obd_osfs_lock);
1133                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1134                         obd->obd_osfs_age = cfs_time_current_64();
1135                         spin_unlock(&obd->obd_osfs_lock);
1136                 }
1137         } else {
1138                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1139                        " objects "LPU64"/"LPU64"\n",
1140                        obd->obd_name, &obd->obd_osfs,
1141                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1142                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1143                 spin_lock(&obd->obd_osfs_lock);
1144                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1145                 spin_unlock(&obd->obd_osfs_lock);
1146         }
1147         RETURN(rc);
1148 }
1149
1150 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1151                            struct lov_stripe_md *ea, obd_size start,
1152                            obd_size end, void *capa)
1153 {
1154         int rc;
1155         ENTRY;
1156
1157         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1158         EXP_COUNTER_INCREMENT(exp, sync);
1159
1160         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1161         RETURN(rc);
1162 }
1163
1164 static inline int obd_punch_rqset(struct obd_export *exp,
1165                                   struct obd_info *oinfo,
1166                                   struct obd_trans_info *oti)
1167 {
1168         struct ptlrpc_request_set *set = NULL;
1169         int rc;
1170         ENTRY;
1171
1172         EXP_CHECK_DT_OP(exp, punch);
1173         EXP_COUNTER_INCREMENT(exp, punch);
1174
1175         set =  ptlrpc_prep_set();
1176         if (set == NULL)
1177                 RETURN(-ENOMEM);
1178
1179         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1180         if (rc == 0)
1181                 rc = ptlrpc_set_wait(set);
1182         ptlrpc_set_destroy(set);
1183         RETURN(rc);
1184 }
1185
1186 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1187                             struct obd_trans_info *oti,
1188                             struct ptlrpc_request_set *rqset)
1189 {
1190         int rc;
1191         ENTRY;
1192
1193         EXP_CHECK_DT_OP(exp, punch);
1194         EXP_COUNTER_INCREMENT(exp, punch);
1195
1196         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1197         RETURN(rc);
1198 }
1199
1200 static inline int obd_brw(int cmd, struct obd_export *exp,
1201                           struct obd_info *oinfo, obd_count oa_bufs,
1202                           struct brw_page *pg, struct obd_trans_info *oti)
1203 {
1204         int rc;
1205         ENTRY;
1206
1207         EXP_CHECK_DT_OP(exp, brw);
1208         EXP_COUNTER_INCREMENT(exp, brw);
1209
1210         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1211                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1212                        "or OBD_BRW_CHECK\n");
1213                 LBUG();
1214         }
1215
1216         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1217         RETURN(rc);
1218 }
1219
1220 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1221                                 struct obd_info *oinfo, obd_count oa_bufs,
1222                                 struct brw_page *pg, struct obd_trans_info *oti,
1223                                 struct ptlrpc_request_set *set)
1224 {
1225         int rc;
1226         ENTRY;
1227
1228         EXP_CHECK_DT_OP(exp, brw_async);
1229         EXP_COUNTER_INCREMENT(exp, brw_async);
1230
1231         if (!(cmd & OBD_BRW_RWMASK)) {
1232                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1233                 LBUG();
1234         }
1235
1236         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1237         RETURN(rc);
1238 }
1239
1240 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1241                                 struct obdo *oa, struct lov_stripe_md *lsm,
1242                                 obd_count oa_bufs, struct brw_page *pg,
1243                                 struct obd_trans_info *oti,
1244                                 struct obd_capa *ocapa)
1245 {
1246         struct ptlrpc_request_set *set = NULL;
1247         struct obd_info oinfo = { { { 0 } } };
1248         int rc = 0;
1249         ENTRY;
1250
1251         set =  ptlrpc_prep_set();
1252         if (set == NULL)
1253                 RETURN(-ENOMEM);
1254
1255         oinfo.oi_oa = oa;
1256         oinfo.oi_md = lsm;
1257         oinfo.oi_capa = ocapa;
1258         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1259         if (rc == 0) {
1260                 rc = ptlrpc_set_wait(set);
1261                 if (rc)
1262                         CERROR("error from callback: rc = %d\n", rc);
1263         } else {
1264                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
1265                        "error from obd_brw_async: rc = %d\n", rc);
1266         }
1267         ptlrpc_set_destroy(set);
1268         RETURN(rc);
1269 }
1270
1271 static inline  int obd_prep_async_page(struct obd_export *exp,
1272                                        struct lov_stripe_md *lsm,
1273                                        struct lov_oinfo *loi,
1274                                        cfs_page_t *page, obd_off offset,
1275                                        struct obd_async_page_ops *ops,
1276                                        void *data, void **res, int nocache,
1277                                        struct lustre_handle *lockh)
1278 {
1279         int ret;
1280         ENTRY;
1281
1282         EXP_CHECK_DT_OP(exp, prep_async_page);
1283         EXP_COUNTER_INCREMENT(exp, prep_async_page);
1284
1285         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1286                                                  ops, data, res, nocache,
1287                                                  lockh);
1288         RETURN(ret);
1289 }
1290
1291 /**
1292  * Checks if requested extent lock is compatible with a lock under the page.
1293  *
1294  * Checks if the lock under \a page is compatible with a read or write lock
1295  * (specified by \a rw) for an extent [\a start , \a end].
1296  *
1297  * \param exp obd export (lov or osc)
1298  * \param lsm striping information for the file
1299  * \param res async_page placeholder
1300  * \param rw OBD_BRW_READ if requested for reading,
1301  *           OBD_BRW_WRITE if requested for writing
1302  * \param start start of the requested extent
1303  * \param end end of the requested extent
1304  * \param cookie transparent parameter for passing locking context
1305  *
1306  * \post result == 1, *cookie == context, appropriate lock is referenced or
1307  *
1308  * \retval 1 owned lock is reused for the request
1309  * \retval 0 no lock reused for the request
1310  * \retval -ENOTSUPP reget_short_lock is not exported at this layer
1311  *
1312  * \see obd_release_short_lock
1313  */
1314 static inline int obd_reget_short_lock(struct obd_export *exp,
1315                                        struct lov_stripe_md *lsm,
1316                                        void **res, int rw,
1317                                        obd_off start, obd_off end,
1318                                        void **cookie)
1319 {
1320         ENTRY;
1321
1322         EXP_CHECK_DT_OP(exp, reget_short_lock);
1323         EXP_COUNTER_INCREMENT(exp, reget_short_lock);
1324
1325         RETURN(OBP(exp->exp_obd, reget_short_lock)(exp, lsm, res, rw,
1326                                                    start, end, cookie));
1327 }
1328
1329
1330 /**
1331  * Releases a reference to a lock taken in a "fast" way.
1332  *
1333  * Releases a read or write (specified by \a rw) lock
1334  * referenced by \a cookie.
1335  *
1336  * \param exp obd export (lov or osc)
1337  * \param lsm striping information for the file
1338  * \param end end of the locked extent
1339  * \param rw OBD_BRW_READ if requested for reading,
1340  *           OBD_BRW_WRITE if requested for writing
1341  * \param cookie transparent parameter for passing locking context
1342  *
1343  * \post appropriate lock is dereferenced
1344  *
1345  * \see obd_reget_short_lock
1346  */
1347 static inline int obd_release_short_lock(struct obd_export *exp,
1348                                          struct lov_stripe_md *lsm, obd_off end,
1349                                          void *cookie, int rw)
1350 {
1351         ENTRY;
1352
1353         EXP_CHECK_DT_OP(exp, release_short_lock);
1354         EXP_COUNTER_INCREMENT(exp, release_short_lock);
1355
1356         RETURN(OBP(exp->exp_obd, release_short_lock)(exp, lsm, end,
1357                                                      cookie, rw));
1358 }
1359
1360 static inline int obd_queue_async_io(struct obd_export *exp,
1361                                      struct lov_stripe_md *lsm,
1362                                      struct lov_oinfo *loi, void *cookie,
1363                                      int cmd, obd_off off, int count,
1364                                      obd_flag brw_flags, obd_flag async_flags)
1365 {
1366         int rc;
1367         ENTRY;
1368
1369         EXP_CHECK_DT_OP(exp, queue_async_io);
1370         EXP_COUNTER_INCREMENT(exp, queue_async_io);
1371         LASSERT(cmd & OBD_BRW_RWMASK);
1372
1373         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1374                                                count, brw_flags, async_flags);
1375         RETURN(rc);
1376 }
1377
1378 static inline int obd_set_async_flags(struct obd_export *exp,
1379                                       struct lov_stripe_md *lsm,
1380                                       struct lov_oinfo *loi, void *cookie,
1381                                       obd_flag async_flags)
1382 {
1383         int rc;
1384         ENTRY;
1385
1386         EXP_CHECK_DT_OP(exp, set_async_flags);
1387         EXP_COUNTER_INCREMENT(exp, set_async_flags);
1388
1389         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1390                                                 async_flags);
1391         RETURN(rc);
1392 }
1393
1394 static inline int obd_queue_group_io(struct obd_export *exp,
1395                                      struct lov_stripe_md *lsm,
1396                                      struct lov_oinfo *loi,
1397                                      struct obd_io_group *oig,
1398                                      void *cookie, int cmd, obd_off off,
1399                                      int count, obd_flag brw_flags,
1400                                      obd_flag async_flags)
1401 {
1402         int rc;
1403         ENTRY;
1404
1405         EXP_CHECK_DT_OP(exp, queue_group_io);
1406         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1407         LASSERT(cmd & OBD_BRW_RWMASK);
1408
1409         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1410                                                cmd, off, count, brw_flags,
1411                                                async_flags);
1412         RETURN(rc);
1413 }
1414
1415 static inline int obd_trigger_group_io(struct obd_export *exp,
1416                                        struct lov_stripe_md *lsm,
1417                                        struct lov_oinfo *loi,
1418                                        struct obd_io_group *oig)
1419 {
1420         int rc;
1421         ENTRY;
1422
1423         EXP_CHECK_DT_OP(exp, trigger_group_io);
1424         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1425
1426         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1427         RETURN(rc);
1428 }
1429
1430 static inline int obd_teardown_async_page(struct obd_export *exp,
1431                                           struct lov_stripe_md *lsm,
1432                                           struct lov_oinfo *loi, void *cookie)
1433 {
1434         int rc;
1435         ENTRY;
1436
1437         EXP_CHECK_DT_OP(exp, teardown_async_page);
1438         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1439
1440         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1441         RETURN(rc);
1442 }
1443
1444 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1445                              int objcount, struct obd_ioobj *obj,
1446                              struct niobuf_remote *remote, int *pages,
1447                              struct niobuf_local *local,
1448                              struct obd_trans_info *oti,
1449                              struct lustre_capa *capa)
1450 {
1451         int rc;
1452         ENTRY;
1453
1454         EXP_CHECK_DT_OP(exp, preprw);
1455         EXP_COUNTER_INCREMENT(exp, preprw);
1456
1457         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, remote,
1458                                        pages, local, oti, capa);
1459         RETURN(rc);
1460 }
1461
1462 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1463                                int objcount, struct obd_ioobj *obj,
1464                                struct niobuf_remote *rnb, int pages,
1465                                struct niobuf_local *local,
1466                                struct obd_trans_info *oti, int rc)
1467 {
1468         ENTRY;
1469
1470         EXP_CHECK_DT_OP(exp, commitrw);
1471         EXP_COUNTER_INCREMENT(exp, commitrw);
1472
1473         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj,
1474                                          rnb, pages, local, oti, rc);
1475         RETURN(rc);
1476 }
1477
1478 static inline int obd_merge_lvb(struct obd_export *exp,
1479                                 struct lov_stripe_md *lsm,
1480                                 struct ost_lvb *lvb, int kms_only)
1481 {
1482         int rc;
1483         ENTRY;
1484
1485         EXP_CHECK_DT_OP(exp, merge_lvb);
1486         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1487
1488         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1489         RETURN(rc);
1490 }
1491
1492 static inline int obd_adjust_kms(struct obd_export *exp,
1493                                  struct lov_stripe_md *lsm, obd_off size,
1494                                  int shrink)
1495 {
1496         int rc;
1497         ENTRY;
1498
1499         EXP_CHECK_DT_OP(exp, adjust_kms);
1500         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1501
1502         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1503         RETURN(rc);
1504 }
1505
1506 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1507                                 int len, void *karg, void *uarg)
1508 {
1509         int rc;
1510         ENTRY;
1511
1512         EXP_CHECK_DT_OP(exp, iocontrol);
1513         EXP_COUNTER_INCREMENT(exp, iocontrol);
1514
1515         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1516         RETURN(rc);
1517 }
1518
1519 static inline int obd_enqueue_rqset(struct obd_export *exp,
1520                                     struct obd_info *oinfo,
1521                                     struct ldlm_enqueue_info *einfo)
1522 {
1523         struct ptlrpc_request_set *set = NULL;
1524         int rc;
1525         ENTRY;
1526
1527         EXP_CHECK_DT_OP(exp, enqueue);
1528         EXP_COUNTER_INCREMENT(exp, enqueue);
1529
1530         set =  ptlrpc_prep_set();
1531         if (set == NULL)
1532                 RETURN(-ENOMEM);
1533
1534         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1535         if (rc == 0)
1536                 rc = ptlrpc_set_wait(set);
1537         ptlrpc_set_destroy(set);
1538         RETURN(rc);
1539 }
1540
1541 static inline int obd_enqueue(struct obd_export *exp,
1542                               struct obd_info *oinfo,
1543                               struct ldlm_enqueue_info *einfo,
1544                               struct ptlrpc_request_set *set)
1545 {
1546         int rc;
1547         ENTRY;
1548
1549         EXP_CHECK_DT_OP(exp, enqueue);
1550         EXP_COUNTER_INCREMENT(exp, enqueue);
1551
1552         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1553         RETURN(rc);
1554 }
1555
1556 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1557                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1558                             int *flags, void *data, struct lustre_handle *lockh)
1559 {
1560         int rc;
1561         ENTRY;
1562
1563         EXP_CHECK_DT_OP(exp, match);
1564         EXP_COUNTER_INCREMENT(exp, match);
1565
1566         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1567                                       lockh);
1568         RETURN(rc);
1569 }
1570
1571 static inline int obd_change_cbdata(struct obd_export *exp,
1572                                     struct lov_stripe_md *lsm,
1573                                     ldlm_iterator_t it, void *data)
1574 {
1575         int rc;
1576         ENTRY;
1577
1578         EXP_CHECK_DT_OP(exp, change_cbdata);
1579         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1580
1581         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1582         RETURN(rc);
1583 }
1584
1585 static inline int obd_cancel(struct obd_export *exp,
1586                              struct lov_stripe_md *ea, __u32 mode,
1587                              struct lustre_handle *lockh)
1588 {
1589         int rc;
1590         ENTRY;
1591
1592         EXP_CHECK_DT_OP(exp, cancel);
1593         EXP_COUNTER_INCREMENT(exp, cancel);
1594
1595         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1596         RETURN(rc);
1597 }
1598
1599 static inline int obd_cancel_unused(struct obd_export *exp,
1600                                     struct lov_stripe_md *ea,
1601                                     int flags, void *opaque)
1602 {
1603         int rc;
1604         ENTRY;
1605
1606         EXP_CHECK_DT_OP(exp, cancel_unused);
1607         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1608
1609         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1610         RETURN(rc);
1611 }
1612
1613 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1614                           struct obd_capa *oc, struct obd_client_handle *handle,
1615                           int flag)
1616 {
1617         int rc;
1618         ENTRY;
1619
1620         EXP_CHECK_DT_OP(exp, pin);
1621         EXP_COUNTER_INCREMENT(exp, pin);
1622
1623         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1624         RETURN(rc);
1625 }
1626
1627 static inline int obd_unpin(struct obd_export *exp,
1628                             struct obd_client_handle *handle, int flag)
1629 {
1630         int rc;
1631         ENTRY;
1632
1633         EXP_CHECK_DT_OP(exp, unpin);
1634         EXP_COUNTER_INCREMENT(exp, unpin);
1635
1636         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1637         RETURN(rc);
1638 }
1639
1640
1641 static inline void obd_import_event(struct obd_device *obd,
1642                                     struct obd_import *imp,
1643                                     enum obd_import_event event)
1644 {
1645         ENTRY;
1646         if (!obd) {
1647                 CERROR("NULL device\n");
1648                 EXIT;
1649                 return;
1650         }
1651         if (obd->obd_set_up && OBP(obd, import_event)) {
1652                 OBD_COUNTER_INCREMENT(obd, import_event);
1653                 OBP(obd, import_event)(obd, imp, event);
1654         }
1655         EXIT;
1656 }
1657
1658 static inline int obd_llog_connect(struct obd_export *exp,
1659                                    struct llogd_conn_body *body)
1660 {
1661         int rc;
1662         ENTRY;
1663
1664         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1665         EXP_COUNTER_INCREMENT(exp, llog_connect);
1666
1667         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1668         RETURN(rc);
1669 }
1670
1671
1672 static inline int obd_notify(struct obd_device *obd,
1673                              struct obd_device *watched,
1674                              enum obd_notify_event ev,
1675                              void *data)
1676 {
1677         int rc;
1678         ENTRY;
1679         OBD_CHECK_DEV(obd);
1680
1681         /* the check for async_recov is a complete hack - I'm hereby
1682            overloading the meaning to also mean "this was called from
1683            mds_postsetup".  I know that my mds is able to handle notifies
1684            by this point, and it needs to get them to execute mds_postrecov. */
1685         if (!obd->obd_set_up && !obd->obd_async_recov) {
1686                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1687                 RETURN(-EINVAL);
1688         }
1689
1690         if (!OBP(obd, notify)) {
1691                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1692                 RETURN(-ENOSYS);
1693         }
1694
1695         OBD_COUNTER_INCREMENT(obd, notify);
1696         rc = OBP(obd, notify)(obd, watched, ev, data);
1697         RETURN(rc);
1698 }
1699
1700 static inline int obd_notify_observer(struct obd_device *observer,
1701                                       struct obd_device *observed,
1702                                       enum obd_notify_event ev,
1703                                       void *data)
1704 {
1705         int rc1;
1706         int rc2;
1707
1708         struct obd_notify_upcall *onu;
1709
1710         if (observer->obd_observer)
1711                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1712         else
1713                 rc1 = 0;
1714         /*
1715          * Also, call non-obd listener, if any
1716          */
1717         onu = &observer->obd_upcall;
1718         if (onu->onu_upcall != NULL)
1719                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1720         else
1721                 rc2 = 0;
1722
1723         return rc1 ? rc1 : rc2;
1724 }
1725
1726 static inline int obd_quotacheck(struct obd_export *exp,
1727                                  struct obd_quotactl *oqctl)
1728 {
1729         int rc;
1730         ENTRY;
1731
1732         EXP_CHECK_DT_OP(exp, quotacheck);
1733         EXP_COUNTER_INCREMENT(exp, quotacheck);
1734
1735         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1736         RETURN(rc);
1737 }
1738
1739 static inline int obd_quotactl(struct obd_export *exp,
1740                                struct obd_quotactl *oqctl)
1741 {
1742         int rc;
1743         ENTRY;
1744
1745         EXP_CHECK_DT_OP(exp, quotactl);
1746         EXP_COUNTER_INCREMENT(exp, quotactl);
1747
1748         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1749         RETURN(rc);
1750 }
1751
1752 static inline int obd_health_check(struct obd_device *obd)
1753 {
1754         /* returns: 0 on healthy
1755          *         >0 on unhealthy + reason code/flag
1756          *            however the only suppored reason == 1 right now
1757          *            We'll need to define some better reasons
1758          *            or flags in the future.
1759          *         <0 on error
1760          */
1761         int rc;
1762         ENTRY;
1763
1764         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1765         if (obd == NULL || !OBT(obd)) {
1766                 CERROR("cleaned up obd\n");
1767                 RETURN(-EOPNOTSUPP);
1768         }
1769         if (!obd->obd_set_up || obd->obd_stopping)
1770                 RETURN(0);
1771         if (!OBP(obd, health_check))
1772                 RETURN(0);
1773
1774         rc = OBP(obd, health_check)(obd);
1775         RETURN(rc);
1776 }
1777
1778 static inline int obd_register_observer(struct obd_device *obd,
1779                                         struct obd_device *observer)
1780 {
1781         ENTRY;
1782         OBD_CHECK_DEV(obd);
1783         if (obd->obd_observer && observer)
1784                 RETURN(-EALREADY);
1785         obd->obd_observer = observer;
1786         RETURN(0);
1787 }
1788
1789 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1790                                                obd_page_removal_cb_t cb,
1791                                                obd_pin_extent_cb pin_cb)
1792 {
1793         int rc;
1794         ENTRY;
1795
1796         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1797         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1798
1799         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1800         RETURN(rc);
1801 }
1802
1803 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1804                                                  obd_page_removal_cb_t cb)
1805 {
1806         int rc;
1807         ENTRY;
1808
1809         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1810         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1811
1812         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1813         RETURN(rc);
1814 }
1815
1816 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1817                                               obd_lock_cancel_cb cb)
1818 {
1819         int rc;
1820         ENTRY;
1821
1822         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1823         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1824
1825         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1826         RETURN(rc);
1827 }
1828
1829 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1830                                                  obd_lock_cancel_cb cb)
1831 {
1832         int rc;
1833         ENTRY;
1834
1835         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1836         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1837
1838         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1839         RETURN(rc);
1840 }
1841
1842 /* metadata helpers */
1843 static inline int md_getstatus(struct obd_export *exp,
1844                                struct lu_fid *fid, struct obd_capa **pc)
1845 {
1846         int rc;
1847         ENTRY;
1848
1849         EXP_CHECK_MD_OP(exp, getstatus);
1850         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1851         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1852         RETURN(rc);
1853 }
1854
1855 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1856                              struct obd_capa *oc, obd_valid valid, int ea_size,
1857                              struct ptlrpc_request **request)
1858 {
1859         int rc;
1860         ENTRY;
1861         EXP_CHECK_MD_OP(exp, getattr);
1862         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1863         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1864                                         ea_size, request);
1865         RETURN(rc);
1866 }
1867
1868 static inline int md_change_cbdata(struct obd_export *exp,
1869                                    const struct lu_fid *fid,
1870                                    ldlm_iterator_t it, void *data)
1871 {
1872         int rc;
1873         ENTRY;
1874         EXP_CHECK_MD_OP(exp, change_cbdata);
1875         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1876         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1877         RETURN(rc);
1878 }
1879
1880 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1881                            struct md_open_data *mod,
1882                            struct ptlrpc_request **request)
1883 {
1884         int rc;
1885         ENTRY;
1886         EXP_CHECK_MD_OP(exp, close);
1887         EXP_MD_COUNTER_INCREMENT(exp, close);
1888         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1889         RETURN(rc);
1890 }
1891
1892 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1893                             const void *data, int datalen, int mode, __u32 uid,
1894                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1895                             struct ptlrpc_request **request)
1896 {
1897         int rc;
1898         ENTRY;
1899         EXP_CHECK_MD_OP(exp, create);
1900         EXP_MD_COUNTER_INCREMENT(exp, create);
1901         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1902                                        uid, gid, cap_effective, rdev, request);
1903         RETURN(rc);
1904 }
1905
1906 static inline int md_done_writing(struct obd_export *exp,
1907                                   struct md_op_data *op_data,
1908                                   struct md_open_data *mod)
1909 {
1910         int rc;
1911         ENTRY;
1912         EXP_CHECK_MD_OP(exp, done_writing);
1913         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1914         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1915         RETURN(rc);
1916 }
1917
1918 static inline int md_enqueue(struct obd_export *exp,
1919                              struct ldlm_enqueue_info *einfo,
1920                              struct lookup_intent *it,
1921                              struct md_op_data *op_data,
1922                              struct lustre_handle *lockh,
1923                              void *lmm, int lmmsize,
1924                              struct ptlrpc_request **req,
1925                              int extra_lock_flags)
1926 {
1927         int rc;
1928         ENTRY;
1929         EXP_CHECK_MD_OP(exp, enqueue);
1930         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1931         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1932                                         lmm, lmmsize, req, extra_lock_flags);
1933         RETURN(rc);
1934 }
1935
1936 static inline int md_getattr_name(struct obd_export *exp,
1937                                   const struct lu_fid *fid, struct obd_capa *oc,
1938                                   const char *name, int namelen,
1939                                   obd_valid valid, int ea_size, __u32 suppgid,
1940                                   struct ptlrpc_request **request)
1941 {
1942         int rc;
1943         ENTRY;
1944         EXP_CHECK_MD_OP(exp, getattr_name);
1945         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1946         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1947                                              valid, ea_size, suppgid, request);
1948         RETURN(rc);
1949 }
1950
1951 static inline int md_intent_lock(struct obd_export *exp,
1952                                  struct md_op_data *op_data, void *lmm,
1953                                  int lmmsize, struct lookup_intent *it,
1954                                  int flags, struct ptlrpc_request **reqp,
1955                                  ldlm_blocking_callback cb_blocking,
1956                                  int extra_lock_flags)
1957 {
1958         int rc;
1959         ENTRY;
1960         EXP_CHECK_MD_OP(exp, intent_lock);
1961         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1962         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1963                                             it, flags, reqp, cb_blocking,
1964                                             extra_lock_flags);
1965         RETURN(rc);
1966 }
1967
1968 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1969                           struct ptlrpc_request **request)
1970 {
1971         int rc;
1972         ENTRY;
1973         EXP_CHECK_MD_OP(exp, link);
1974         EXP_MD_COUNTER_INCREMENT(exp, link);
1975         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1976         RETURN(rc);
1977 }
1978
1979 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1980                             const char *old, int oldlen, const char *new,
1981                             int newlen, struct ptlrpc_request **request)
1982 {
1983         int rc;
1984         ENTRY;
1985         EXP_CHECK_MD_OP(exp, rename);
1986         EXP_MD_COUNTER_INCREMENT(exp, rename);
1987         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1988                                        newlen, request);
1989         RETURN(rc);
1990 }
1991
1992 static inline int md_is_subdir(struct obd_export *exp,
1993                                const struct lu_fid *pfid,
1994                                const struct lu_fid *cfid,
1995                                struct ptlrpc_request **request)
1996 {
1997         int rc;
1998         ENTRY;
1999         EXP_CHECK_MD_OP(exp, is_subdir);
2000         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
2001         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
2002         RETURN(rc);
2003 }
2004
2005 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
2006                              void *ea, int ealen, void *ea2, int ea2len,
2007                              struct ptlrpc_request **request,
2008                              struct md_open_data **mod)
2009 {
2010         int rc;
2011         ENTRY;
2012         EXP_CHECK_MD_OP(exp, setattr);
2013         EXP_MD_COUNTER_INCREMENT(exp, setattr);
2014         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
2015                                         ea2, ea2len, request, mod);
2016         RETURN(rc);
2017 }
2018
2019 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
2020                           struct obd_capa *oc, struct ptlrpc_request **request)
2021 {
2022         int rc;
2023         ENTRY;
2024         EXP_CHECK_MD_OP(exp, sync);
2025         EXP_MD_COUNTER_INCREMENT(exp, sync);
2026         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
2027         RETURN(rc);
2028 }
2029
2030 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
2031                               struct obd_capa *oc, __u64 offset,
2032                               struct page *page,
2033                               struct ptlrpc_request **request)
2034 {
2035         int rc;
2036         ENTRY;
2037         EXP_CHECK_MD_OP(exp, readpage);
2038         EXP_MD_COUNTER_INCREMENT(exp, readpage);
2039         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
2040         RETURN(rc);
2041 }
2042
2043 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
2044                             struct ptlrpc_request **request)
2045 {
2046         int rc;
2047         ENTRY;
2048         EXP_CHECK_MD_OP(exp, unlink);
2049         EXP_MD_COUNTER_INCREMENT(exp, unlink);
2050         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2051         RETURN(rc);
2052 }
2053
2054 static inline int md_get_lustre_md(struct obd_export *exp,
2055                                    struct ptlrpc_request *req,
2056                                    struct obd_export *dt_exp,
2057                                    struct obd_export *md_exp,
2058                                    struct lustre_md *md)
2059 {
2060         ENTRY;
2061         EXP_CHECK_MD_OP(exp, get_lustre_md);
2062         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2063         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2064 }
2065
2066 static inline int md_free_lustre_md(struct obd_export *exp,
2067                                     struct lustre_md *md)
2068 {
2069         ENTRY;
2070         EXP_CHECK_MD_OP(exp, free_lustre_md);
2071         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2072         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2073 }
2074
2075 static inline int md_setxattr(struct obd_export *exp,
2076                               const struct lu_fid *fid, struct obd_capa *oc,
2077                               obd_valid valid, const char *name,
2078                               const char *input, int input_size,
2079                               int output_size, int flags, __u32 suppgid,
2080                               struct ptlrpc_request **request)
2081 {
2082         ENTRY;
2083         EXP_CHECK_MD_OP(exp, setxattr);
2084         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2085         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2086                                            input_size, output_size, flags,
2087                                            suppgid, request));
2088 }
2089
2090 static inline int md_getxattr(struct obd_export *exp,
2091                               const struct lu_fid *fid, struct obd_capa *oc,
2092                               obd_valid valid, const char *name,
2093                               const char *input, int input_size,
2094                               int output_size, int flags,
2095                               struct ptlrpc_request **request)
2096 {
2097         ENTRY;
2098         EXP_CHECK_MD_OP(exp, getxattr);
2099         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2100         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2101                                            input_size, output_size, flags,
2102                                            request));
2103 }
2104
2105 static inline int md_set_open_replay_data(struct obd_export *exp,
2106                                           struct obd_client_handle *och,
2107                                           struct ptlrpc_request *open_req)
2108 {
2109         ENTRY;
2110         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2111         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2112         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2113 }
2114
2115 static inline int md_clear_open_replay_data(struct obd_export *exp,
2116                                             struct obd_client_handle *och)
2117 {
2118         ENTRY;
2119         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2120         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2121         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2122 }
2123
2124 static inline int md_set_lock_data(struct obd_export *exp,
2125                                    __u64 *lockh, void *data)
2126 {
2127         ENTRY;
2128         EXP_CHECK_MD_OP(exp, set_lock_data);
2129         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2130         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
2131 }
2132
2133 static inline int md_cancel_unused(struct obd_export *exp,
2134                                    const struct lu_fid *fid,
2135                                    ldlm_policy_data_t *policy,
2136                                    ldlm_mode_t mode, int flags, void *opaque)
2137 {
2138         int rc;
2139         ENTRY;
2140
2141         EXP_CHECK_MD_OP(exp, cancel_unused);
2142         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2143
2144         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2145                                               flags, opaque);
2146         RETURN(rc);
2147 }
2148
2149 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2150                                         const struct lu_fid *fid,
2151                                         ldlm_type_t type,
2152                                         ldlm_policy_data_t *policy,
2153                                         ldlm_mode_t mode,
2154                                         struct lustre_handle *lockh)
2155 {
2156         ENTRY;
2157         EXP_CHECK_MD_OP(exp, lock_match);
2158         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2159         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2160                                              policy, mode, lockh));
2161 }
2162
2163 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2164                                   int def_asize, int cookiesize)
2165 {
2166         ENTRY;
2167         EXP_CHECK_MD_OP(exp, init_ea_size);
2168         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2169         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2170                                                cookiesize));
2171 }
2172
2173 static inline int md_get_remote_perm(struct obd_export *exp,
2174                                      const struct lu_fid *fid,
2175                                      struct obd_capa *oc, __u32 suppgid,
2176                                      struct ptlrpc_request **request)
2177 {
2178         ENTRY;
2179         EXP_CHECK_MD_OP(exp, get_remote_perm);
2180         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2181         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2182                                                   request));
2183 }
2184
2185 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2186                                 renew_capa_cb_t cb)
2187 {
2188         int rc;
2189         ENTRY;
2190         EXP_CHECK_MD_OP(exp, renew_capa);
2191         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2192         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2193         RETURN(rc);
2194 }
2195
2196 static inline int md_intent_getattr_async(struct obd_export *exp,
2197                                           struct md_enqueue_info *minfo,
2198                                           struct ldlm_enqueue_info *einfo)
2199 {
2200         int rc;
2201         ENTRY;
2202         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2203         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2204         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2205         RETURN(rc);
2206 }
2207
2208 static inline int md_revalidate_lock(struct obd_export *exp,
2209                                      struct lookup_intent *it,
2210                                      struct lu_fid *fid)
2211 {
2212         int rc;
2213         ENTRY;
2214         EXP_CHECK_MD_OP(exp, revalidate_lock);
2215         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2216         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
2217         RETURN(rc);
2218 }
2219
2220
2221 /* OBD Metadata Support */
2222
2223 extern int obd_init_caches(void);
2224 extern void obd_cleanup_caches(void);
2225
2226 /* support routines */
2227 extern cfs_mem_cache_t *obdo_cachep;
2228
2229 #define OBDO_ALLOC(ptr)                                                       \
2230 do {                                                                          \
2231         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2232 } while(0)
2233
2234 #define OBDO_FREE(ptr)                                                        \
2235 do {                                                                          \
2236         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2237 } while(0)
2238
2239
2240 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2241 {
2242         /* something here */
2243 }
2244
2245 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2246 {
2247         /* something here */
2248 }
2249
2250 /* I'm as embarrassed about this as you are.
2251  *
2252  * <shaver> // XXX do not look into _superhack with remaining eye
2253  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2254 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2255
2256 /* sysctl.c */
2257 extern void obd_sysctl_init (void);
2258 extern void obd_sysctl_clean (void);
2259
2260 /* uuid.c  */
2261 typedef __u8 class_uuid_t[16];
2262 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2263
2264 /* lustre_peer.c    */
2265 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2266 int class_add_uuid(const char *uuid, __u64 nid);
2267 int class_del_uuid (const char *uuid);
2268 void class_init_uuidlist(void);
2269 void class_exit_uuidlist(void);
2270
2271 /* mea.c */
2272 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2273 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2274
2275 /* prng.c */
2276 void ll_generate_random_uuid(class_uuid_t uuid_out);
2277
2278 #endif /* __LINUX_OBD_CLASS_H */